= Wiki Processors =
Processors are WikiMacros designed to provide alternative markup formats for the [TracWiki Wiki engine]. Processors can be thought of as ''macro functions to process user-edited text''.
Wiki processors can be used in any Wiki text throughout Trac,
for various different purposes, like:
- [#CodeHighlightingSupport syntax highlighting] or for rendering text verbatim,
- rendering [#HTMLrelated Wiki markup inside a context],
like inside

blocks or or within

or

table cells,
- using an alternative markup syntax, like [wiki:WikiHtml raw HTML] and
[wiki:WikiRestructuredText Restructured Text],
or [http://www.textism.com/tools/textile/ textile]
== Using Processors ==
To use a processor on a block of text, first delimit the lines using
a Wiki ''code block'':
{{{
{{{
The lines
that should be processed...
}}}
}}}
Immediately after the `{{{` or on the line just below,
add `#!` followed by the ''processor name''.
{{{
{{{
#!processorname
The lines
that should be processed...
}}}
}}}
This is the "shebang" notation, familiar to most UNIX users.
Besides their content, some Wiki processors can also accept ''parameters'',
which are then given as `key=value` pairs after the processor name,
on the same line. If `value` has to contain space, as it's often the case for
the style parameter, a quoted string can be used (`key="value with space"`).
As some processors are meant to process Wiki markup, it's quite possible to
''nest'' processor blocks.
You may want to indent the content of nested blocks for increased clarity,
this extra indentation will be ignored when processing the content.
== Examples ==
||= Wiki Markup =||= Display =||
{{{#!td colspan=2 align=center style="border: none"
__Example 1__: Inserting raw HTML
}}}
|-----------------------------------------------------------------
{{{#!td style="border: none"
{{{
{{{
#!html

}}}
}}}
== Available Processors ==
The following processors are included in the Trac distribution:
|| '''`#!default`''' || Present the text verbatim in a preformatted text block. This is the same as specifying ''no'' processor name (and no `#!`) ||
|| '''`#!comment`''' || Do not process the text in this section (i.e. contents exist only in the plain text - not in the rendered page). ||
|||| ||
||||= '''HTML related''' =||
|| '''`#!html`''' || Insert custom HTML in a wiki page. ||
|| '''`#!htmlcomment`''' || Insert an HTML comment in a wiki page (''since 0.12''). ||
|| || Note that `#!html` blocks have to be ''self-contained'', i.e. you can't start an HTML element in one block and close it later in a second block. Use the following processors for achieving a similar effect. ||
|| '''`#!div`''' || Wrap an arbitrary Wiki content inside a